Need Help with Big Sprocket

[Ed Law]

Originally Posted by Lee Reed

I'm going to guess you want to do 360 + rotation & don't want to fasten the chain to it but want to keep on revolving. That being said, if I was faced with your problem I would apply a wire wheel to the teeth at frequent intervals to "eat away" the excess tooth width. Don't agonize about the tooth geometry it doesn't have to be perfect it just has to work.
Good luck. Regards.

Yes we do not want to be limited too much on amount of rotation. Another reason is having most of the chain engaged in the teeth will ease my concern about the chain drooping down.
What is wire wheel? Is it just wrapping wires around the chain? Do you have a picture?